160 lines
4.4 KiB
Python
160 lines
4.4 KiB
Python
# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Utilities related to the look&feel of qutebrowser.
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Module attributes:
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_colordict: The global cached ColorDict.
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_fontdict: The global cached FontDict.
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"""
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from functools import partial
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import qutebrowser.config.config as config
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_colordict = None
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_fontdict = None
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def get_stylesheet(template):
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"""Format a stylesheet based on a template.
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Args:
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template: The stylesheet template as string.
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Return:
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The formatted template as string.
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"""
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global _colordict, _fontdict
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if _colordict is None:
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_colordict = ColorDict(config.instance['colors'])
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if _fontdict is None:
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_fontdict = FontDict(config.instance['fonts'])
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return template.strip().format(color=_colordict, font=_fontdict)
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def set_register_stylesheet(obj):
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"""Set the stylesheet for an object based on it's STYLESHEET attribute.
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Also, register an update when the config is changed.
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This isn't really good OOP, but it's the cleanest solution I could think
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of.
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Args:
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obj: The object to set the stylesheet for and register.
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Must have a STYLESHEET attribute.
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"""
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obj.setStyleSheet(get_stylesheet(obj.STYLESHEET))
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config.instance.changed.connect(partial(_update_stylesheet, obj))
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def _update_stylesheet(obj, _section, _option):
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"""Update the stylesheet for obj."""
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obj.setStyleSheet(get_stylesheet(obj.STYLESHEET))
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def invalidate_caches(section, _option):
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"""Invalidate cached dicts."""
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global _colordict, _fontdict
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if section == 'colors':
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_colordict = None
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elif section == 'fonts':
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_fontdict = None
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class ColorDict(dict):
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"""A dict aimed at Qt stylesheet colors."""
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def __getitem__(self, key):
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"""Override dict __getitem__.
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Args:
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key: The key to get from the dict.
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Return:
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If a value wasn't found, return an empty string.
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(Color not defined, so no output in the stylesheet)
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If the key has a .fg. element in it, return color: X;.
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If the key has a .bg. element in it, return background-color: X;.
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In all other cases, return the plain value.
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"""
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try:
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val = super().__getitem__(key)
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except KeyError:
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return ''
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if 'fg' in key.split('.'):
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return 'color: {};'.format(val)
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elif 'bg' in key.split('.'):
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return 'background-color: {};'.format(val)
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else:
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return val
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def getraw(self, key):
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"""Get a value without the transformations done in __getitem__.
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Args:
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key: The key to get from the dict.
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Return:
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A value, or None if the value wasn't found.
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"""
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try:
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return super().__getitem__(key)
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except KeyError:
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return None
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class FontDict(dict):
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"""A dict aimed at Qt stylesheet fonts."""
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def __getitem__(self, key):
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"""Override dict __getitem__.
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Args:
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key: The key to get from the dict.
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Return:
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If a value wasn't found, return an empty string.
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(Color not defined, so no output in the stylesheet)
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In all other cases, return font: <value>.
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"""
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try:
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val = super().__getitem__(key)
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except KeyError:
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return ''
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else:
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return 'font: {};'.format(val)
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def getraw(self, key):
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"""Get a value without the transformations done in __getitem__.
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Args:
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key: The key to get from the dict.
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Return:
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A value, or None if the value wasn't found.
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"""
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try:
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return super().__getitem__(key)
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except KeyError:
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return None
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